Acromag DT236-0600, Руководство пользователя, Страница: 34 / 40

Model DT23x-0600 Dual Two-Wire DC I/V Input Transmitters
Acromag, Inc. Tel: 248-295-0880 - 34 -
http://www.acromag.com
- 34 - https://www.acromag.com
Input … continued
The output wires of this current
sensor are polarized with red as
(+) plus and black as (-) minus.
Normally these output wires are
attached to one end of a user
supplied cable, while the other
end connects to the DC current
input at TB1.
Optional AC Current Sensor (Model 5020-350, For AC Input to TB1 of DT236 only):
Optional sensor can be connected to TB1 of the DT236 model for AC current sensing
and is a toroidal instrument transformer that converts the sinusoidal 50-60Hz AC
current signal into low level 0 to 11.17mA DC. The input AC current range is a
function of the number of turns placed through the toroid as shown in Table 2
below. This sensor is isolated and requires no calibration or adjustment. When used
with a D2336 module, it also facilitates AC current input isolation from the ADC
voltage input, as well as redundant input isolation with respect to each output of this
transmitter. When used with the DT236 module, it also facilitates AC current input
isolation from the DC input, and redundant current input isolation with respect to
the output of this transmitter.
Table 2: Optional AC Current Sensor Turns & Range
AC Current Input Primary Turns Sensor Output (Red/Black Wires)
0 to 20A AC 1 0 to 11.17mA DC
0 to 10A AC 2 “
0 to 5A AC 4 “
0 to 2A AC 10 “
0 to 1A AC 20 “
AC Input Burden : A function of the wire gauge resistance used for primary turns
(the current carrying wire being monitored). AC Current Sensor to Transmitter
Wiring Distance : 400 feet maximum for 18 AWG. Other wire gages can be used if
the total resistance of both wires is less than 5

.
AC Input Overload : The sensor will withstand overload conditions as follows:
•
20 times full scale for 0.01 seconds.
•
10 times full scale for 0.1 seconds.
•
5 times full scale for 1.0 second.